sys/dev/firewire/sbp_targ.c

   1 /*-
   2  * Copyright (C) 2003
   3  *      Hidetoshi Shimokawa. All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *
  16  *      This product includes software developed by Hidetoshi Shimokawa.
  17  *
  18  * 4. Neither the name of the author nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $FreeBSD$
  35  */
  36
  37 #include <sys/param.h>
  38 #include <sys/kernel.h>
  39 #include <sys/systm.h>
  40 #include <sys/sysctl.h>
  41 #include <sys/types.h>
  42 #include <sys/conf.h>
  43 #include <sys/malloc.h>
  44 #include <sys/endian.h>
  45
  46 #include <sys/bus.h>
  47 #include <machine/bus.h>
  48
  49 #include <dev/firewire/firewire.h>
  50 #include <dev/firewire/firewirereg.h>
  51 #include <dev/firewire/iec13213.h>
  52 #include <dev/firewire/sbp.h>
  53 #include <dev/firewire/fwmem.h>
  54
  55 #include <cam/cam.h>
  56 #include <cam/cam_ccb.h>
  57 #include <cam/cam_sim.h>
  58 #include <cam/cam_xpt_sim.h>
  59 #include <cam/cam_debug.h>
  60 #include <cam/cam_periph.h>
  61 #include <cam/scsi/scsi_all.h>
  62 #include <cam/scsi/scsi_message.h>
  63
  64 #define SBP_TARG_RECV_LEN       8
  65 #define MAX_INITIATORS          8
  66 #define MAX_LUN                 63
  67 #define MAX_LOGINS              63
  68 #define MAX_NODES               63
  69 /*
  70  * management/command block agent registers
  71  *
  72  * BASE 0xffff f001 0000 management port
  73  * BASE 0xffff f001 0020 command port for login id 0
  74  * BASE 0xffff f001 0040 command port for login id 1
  75  *
  76  */
  77 #define SBP_TARG_MGM     0x10000        /* offset from 0xffff f000 000 */
  78 #define SBP_TARG_BIND_HI        0xffff
  79 #define SBP_TARG_BIND_LO(l)     (0xf0000000 + SBP_TARG_MGM + 0x20 * ((l) + 1))
  80 #define SBP_TARG_BIND_START     (((u_int64_t)SBP_TARG_BIND_HI << 32) | \
  81                                     SBP_TARG_BIND_LO(-1))
  82 #define SBP_TARG_BIND_END       (((u_int64_t)SBP_TARG_BIND_HI << 32) | \
  83                                     SBP_TARG_BIND_LO(MAX_LOGINS))
  84 #define SBP_TARG_LOGIN_ID(lo)   (((lo) - SBP_TARG_BIND_LO(0))/0x20)
  85
  86 #define FETCH_MGM       0
  87 #define FETCH_CMD       1
  88 #define FETCH_POINTER   2
  89
  90 #define F_LINK_ACTIVE   (1 << 0)
  91 #define F_ATIO_STARVED  (1 << 1)
  92 #define F_LOGIN         (1 << 2)
  93 #define F_HOLD          (1 << 3)
  94 #define F_FREEZED       (1 << 4)
  95
  96 static MALLOC_DEFINE(M_SBP_TARG, "sbp_targ", "SBP-II/FireWire target mode");
  97
  98 static int debug = 0;
  99
 100 SYSCTL_INT(_debug, OID_AUTO, sbp_targ_debug, CTLFLAG_RW, &debug, 0,
 101         "SBP target mode debug flag");
 102
 103 struct sbp_targ_login {
 104         struct sbp_targ_lstate *lstate;
 105         struct fw_device *fwdev;
 106         struct sbp_login_res loginres;
 107         uint16_t fifo_hi;
 108         uint16_t last_hi;
 109         uint32_t fifo_lo;
 110         uint32_t last_lo;
 111         STAILQ_HEAD(, orb_info) orbs;
 112         STAILQ_ENTRY(sbp_targ_login) link;
 113         uint16_t hold_sec;
 114         uint16_t id;
 115         uint8_t flags;
 116         uint8_t spd;
 117         struct callout hold_callout;
 118 };
 119
 120 struct sbp_targ_lstate {
 121         uint16_t lun;
 122         struct sbp_targ_softc *sc;
 123         struct cam_path *path;
 124         struct ccb_hdr_slist accept_tios;
 125         struct ccb_hdr_slist immed_notifies;
 126         struct crom_chunk model;
 127         uint32_t flags;
 128         STAILQ_HEAD(, sbp_targ_login) logins;
 129 };
 130
 131 struct sbp_targ_softc {
 132         struct firewire_dev_comm fd;
 133         struct cam_sim *sim;
 134         struct cam_path *path;
 135         struct fw_bind fwb;
 136         int ndevs;
 137         int flags;
 138         struct crom_chunk unit;
 139         struct sbp_targ_lstate *lstate[MAX_LUN];
 140         struct sbp_targ_lstate *black_hole;
 141         struct sbp_targ_login *logins[MAX_LOGINS];
 142         struct mtx mtx;
 143 };
 144 #define SBP_LOCK(sc) mtx_lock(&(sc)->mtx)
 145 #define SBP_UNLOCK(sc) mtx_unlock(&(sc)->mtx)
 146
 147 struct corb4 {
 148 #if BYTE_ORDER == BIG_ENDIAN
 149         uint32_t n:1,
 150                   rq_fmt:2,
 151                   :1,
 152                   dir:1,
 153                   spd:3,
 154                   max_payload:4,
 155                   page_table_present:1,
 156                   page_size:3,
 157                   data_size:16;
 158 #else
 159         uint32_t data_size:16,
 160                   page_size:3,
 161                   page_table_present:1,
 162                   max_payload:4,
 163                   spd:3,
 164                   dir:1,
 165                   :1,
 166                   rq_fmt:2,
 167                   n:1;
 168 #endif
 169 };
 170
 171 struct morb4 {
 172 #if BYTE_ORDER == BIG_ENDIAN
 173         uint32_t n:1,
 174                   rq_fmt:2,
 175                   :9,
 176                   fun:4,
 177                   id:16;
 178 #else
 179         uint32_t id:16,
 180                   fun:4,
 181                   :9,
 182                   rq_fmt:2,
 183                   n:1;
 184 #endif
 185 };
 186
 187
 188 /*
 189  * Urestricted page table format
 190  * states that the segment length
 191  * and high base addr are in the first
 192  * 32 bits and the base low is in
 193  * the second
 194  */
 195 struct unrestricted_page_table_fmt {
 196         uint16_t segment_len;
 197         uint16_t segment_base_high;
 198         uint32_t segment_base_low;
 199 };
 200
 201
 202 struct orb_info {
 203         struct sbp_targ_softc *sc;
 204         struct fw_device *fwdev;
 205         struct sbp_targ_login *login;
 206         union ccb *ccb;
 207         struct ccb_accept_tio *atio;
 208         uint8_t state;
 209 #define ORBI_STATUS_NONE        0
 210 #define ORBI_STATUS_FETCH       1
 211 #define ORBI_STATUS_ATIO        2
 212 #define ORBI_STATUS_CTIO        3
 213 #define ORBI_STATUS_STATUS      4
 214 #define ORBI_STATUS_POINTER     5
 215 #define ORBI_STATUS_ABORTED     7
 216         uint8_t refcount;
 217         uint16_t orb_hi;
 218         uint32_t orb_lo;
 219         uint32_t data_hi;
 220         uint32_t data_lo;
 221         struct corb4 orb4;
 222         STAILQ_ENTRY(orb_info) link;
 223         uint32_t orb[8];
 224         struct unrestricted_page_table_fmt *page_table;
 225         struct unrestricted_page_table_fmt *cur_pte;
 226         struct unrestricted_page_table_fmt *last_pte;
 227         uint32_t  last_block_read;
 228         struct sbp_status status;
 229 };
 230
 231 static char *orb_fun_name[] = {
 232         ORB_FUN_NAMES
 233 };
 234
 235 static void sbp_targ_recv(struct fw_xfer *);
 236 static void sbp_targ_fetch_orb(struct sbp_targ_softc *, struct fw_device *,
 237     uint16_t, uint32_t, struct sbp_targ_login *, int);
 238 static void sbp_targ_xfer_pt(struct orb_info *);
 239 static void sbp_targ_abort(struct sbp_targ_softc *, struct orb_info *);
 240
 241 static void
 242 sbp_targ_identify(driver_t *driver, device_t parent)
 243 {
 244         BUS_ADD_CHILD(parent, 0, "sbp_targ", device_get_unit(parent));
 245 }
 246
 247 static int
 248 sbp_targ_probe(device_t dev)
 249 {
 250         device_t pa;
 251
 252         pa = device_get_parent(dev);
 253         if (device_get_unit(dev) != device_get_unit(pa)) {
 254                 return (ENXIO);
 255         }
 256
 257         device_set_desc(dev, "SBP-2/SCSI over FireWire target mode");
 258         return (0);
 259 }
 260
 261 static void
 262 sbp_targ_dealloc_login(struct sbp_targ_login *login)
 263 {
 264         struct orb_info *orbi, *next;
 265
 266         if (login == NULL) {
 267                 printf("%s: login = NULL\n", __func__);
 268                 return;
 269         }
 270         for (orbi = STAILQ_FIRST(&login->orbs); orbi != NULL; orbi = next) {
 271                 next = STAILQ_NEXT(orbi, link);
 272                 if (debug)
 273                         printf("%s: free orbi %p\n", __func__, orbi);
 274                 free(orbi, M_SBP_TARG);
 275                 orbi = NULL;
 276         }
 277         callout_stop(&login->hold_callout);
 278
 279         STAILQ_REMOVE(&login->lstate->logins, login, sbp_targ_login, link);
 280         login->lstate->sc->logins[login->id] = NULL;
 281         if (debug)
 282                 printf("%s: free login %p\n", __func__, login);
 283         free((void *)login, M_SBP_TARG);
 284         login = NULL;
 285 }
 286
 287 static void
 288 sbp_targ_hold_expire(void *arg)
 289 {
 290         struct sbp_targ_login *login;
 291
 292         login = (struct sbp_targ_login *)arg;
 293
 294         if (login->flags & F_HOLD) {
 295                 printf("%s: login_id=%d expired\n", __func__, login->id);
 296                 sbp_targ_dealloc_login(login);
 297         } else {
 298                 printf("%s: login_id=%d not hold\n", __func__, login->id);
 299         }
 300 }
 301
 302 static void
 303 sbp_targ_post_busreset(void *arg)
 304 {
 305         struct sbp_targ_softc *sc;
 306         struct crom_src *src;
 307         struct crom_chunk *root;
 308         struct crom_chunk *unit;
 309         struct sbp_targ_lstate *lstate;
 310         struct sbp_targ_login *login;
 311         int i;
 312
 313         sc = (struct sbp_targ_softc *)arg;
 314         src = sc->fd.fc->crom_src;
 315         root = sc->fd.fc->crom_root;
 316
 317         unit = &sc->unit;
 318
 319         if ((sc->flags & F_FREEZED) == 0) {
 320                 sc->flags |= F_FREEZED;
 321                 xpt_freeze_simq(sc->sim, /*count*/1);
 322         } else {
 323                 printf("%s: already freezed\n", __func__);
 324         }
 325
 326         bzero(unit, sizeof(struct crom_chunk));
 327
 328         crom_add_chunk(src, root, unit, CROM_UDIR);
 329         crom_add_entry(unit, CSRKEY_SPEC, CSRVAL_ANSIT10);
 330         crom_add_entry(unit, CSRKEY_VER, CSRVAL_T10SBP2);
 331         crom_add_entry(unit, CSRKEY_COM_SPEC, CSRVAL_ANSIT10);
 332         crom_add_entry(unit, CSRKEY_COM_SET, CSRVAL_SCSI);
 333
 334         crom_add_entry(unit, CROM_MGM, SBP_TARG_MGM >> 2);
 335         crom_add_entry(unit, CSRKEY_UNIT_CH, (10<<8) | 8);
 336
 337         for (i = 0; i < MAX_LUN; i++) {
 338                 lstate = sc->lstate[i];
 339                 if (lstate == NULL)
 340                         continue;
 341                 crom_add_entry(unit, CSRKEY_FIRM_VER, 1);
 342                 crom_add_entry(unit, CROM_LUN, i);
 343                 crom_add_entry(unit, CSRKEY_MODEL, 1);
 344                 crom_add_simple_text(src, unit, &lstate->model, "TargetMode");
 345         }
 346
 347         /* Process for reconnection hold time */
 348         for (i = 0; i < MAX_LOGINS; i++) {
 349                 login = sc->logins[i];
 350                 if (login == NULL)
 351                         continue;
 352                 sbp_targ_abort(sc, STAILQ_FIRST(&login->orbs));
 353                 if (login->flags & F_LOGIN) {
 354                         login->flags |= F_HOLD;
 355                         callout_reset(&login->hold_callout,
 356                             hz * login->hold_sec,
 357                             sbp_targ_hold_expire, (void *)login);
 358                 }
 359         }
 360 }
 361
 362 static void
 363 sbp_targ_post_explore(void *arg)
 364 {
 365         struct sbp_targ_softc *sc;
 366
 367         sc = (struct sbp_targ_softc *)arg;
 368         sc->flags &= ~F_FREEZED;
 369         xpt_release_simq(sc->sim, /*run queue*/TRUE);
 370         return;
 371 }
 372
 373 static cam_status
 374 sbp_targ_find_devs(struct sbp_targ_softc *sc, union ccb *ccb,
 375     struct sbp_targ_lstate **lstate, int notfound_failure)
 376 {
 377         u_int lun;
 378
 379         /* XXX 0 is the only vaild target_id */
 380         if (ccb->ccb_h.target_id == CAM_TARGET_WILDCARD &&
 381             ccb->ccb_h.target_lun == CAM_LUN_WILDCARD) {
 382                 *lstate = sc->black_hole;
 383                 if (debug)
 384                         printf("setting black hole for this target id(%d)\n", ccb->ccb_h.target_id);
 385                 return (CAM_REQ_CMP);
 386         }
 387
 388         lun = ccb->ccb_h.target_lun;
 389         if (lun >= MAX_LUN)
 390                 return (CAM_LUN_INVALID);
 391
 392         *lstate = sc->lstate[lun];
 393
 394         if (notfound_failure != 0 && *lstate == NULL) {
 395                 if (debug)
 396                         printf("%s: lstate for lun is invalid, target(%d), lun(%d)\n",
 397                                 __func__, ccb->ccb_h.target_id, lun);
 398                 return (CAM_PATH_INVALID);
 399         } else
 400                 if (debug)
 401                         printf("%s: setting lstate for tgt(%d) lun(%d)\n",
 402                                 __func__,ccb->ccb_h.target_id, lun);
 403
 404         return (CAM_REQ_CMP);
 405 }
 406
 407 static void
 408 sbp_targ_en_lun(struct sbp_targ_softc *sc, union ccb *ccb)
 409 {
 410         struct ccb_en_lun *cel = &ccb->cel;
 411         struct sbp_targ_lstate *lstate;
 412         cam_status status;
 413
 414         status = sbp_targ_find_devs(sc, ccb, &lstate, 0);
 415         if (status != CAM_REQ_CMP) {
 416                 ccb->ccb_h.status = status;
 417                 return;
 418         }
 419
 420         if (cel->enable != 0) {
 421                 if (lstate != NULL) {
 422                         xpt_print_path(ccb->ccb_h.path);
 423                         printf("Lun already enabled\n");
 424                         ccb->ccb_h.status = CAM_LUN_ALRDY_ENA;
 425                         return;
 426                 }
 427                 if (cel->grp6_len != 0 || cel->grp7_len != 0) {
 428                         ccb->ccb_h.status = CAM_REQ_INVALID;
 429                         printf("Non-zero Group Codes\n");
 430                         return;
 431                 }
 432                 lstate = (struct sbp_targ_lstate *)
 433                     malloc(sizeof(*lstate), M_SBP_TARG, M_NOWAIT | M_ZERO);
 434                 if (lstate == NULL) {
 435                         xpt_print_path(ccb->ccb_h.path);
 436                         printf("Couldn't allocate lstate\n");
 437                         ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
 438                         return;
 439                 } else {
 440                         if (debug)
 441                                 printf("%s: malloc'd lstate %p\n",__func__, lstate);
 442                 }
 443                 if (ccb->ccb_h.target_id == CAM_TARGET_WILDCARD) {
 444                         sc->black_hole = lstate;
 445                         if (debug)
 446                                 printf("Blackhole set due to target id == %d\n",
 447                                         ccb->ccb_h.target_id);
 448                 } else
 449                         sc->lstate[ccb->ccb_h.target_lun] = lstate;
 450
 451                 memset(lstate, 0, sizeof(*lstate));
 452                 lstate->sc = sc;
 453                 status = xpt_create_path(&lstate->path, /*periph*/NULL,
 454                                          xpt_path_path_id(ccb->ccb_h.path),
 455                                          xpt_path_target_id(ccb->ccb_h.path),
 456                                          xpt_path_lun_id(ccb->ccb_h.path));
 457                 if (status != CAM_REQ_CMP) {
 458                         free(lstate, M_SBP_TARG);
 459                         lstate = NULL;
 460                         xpt_print_path(ccb->ccb_h.path);
 461                         printf("Couldn't allocate path\n");
 462                         ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
 463                         return;
 464                 }
 465                 SLIST_INIT(&lstate->accept_tios);
 466                 SLIST_INIT(&lstate->immed_notifies);
 467                 STAILQ_INIT(&lstate->logins);
 468
 469                 ccb->ccb_h.status = CAM_REQ_CMP;
 470                 xpt_print_path(ccb->ccb_h.path);
 471                 printf("Lun now enabled for target mode\n");
 472                 /* bus reset */
 473                 sc->fd.fc->ibr(sc->fd.fc);
 474         } else {
 475                 struct sbp_targ_login *login, *next;
 476
 477                 if (lstate == NULL) {
 478                         ccb->ccb_h.status = CAM_LUN_INVALID;
 479                         printf("Invalid lstate for this target\n");
 480                         return;
 481                 }
 482                 ccb->ccb_h.status = CAM_REQ_CMP;
 483
 484                 if (SLIST_FIRST(&lstate->accept_tios) != NULL) {
 485                         printf("ATIOs pending\n");
 486                         ccb->ccb_h.status = CAM_REQ_INVALID;
 487                 }
 488
 489                 if (SLIST_FIRST(&lstate->immed_notifies) != NULL) {
 490                         printf("INOTs pending\n");
 491                         ccb->ccb_h.status = CAM_REQ_INVALID;
 492                 }
 493
 494                 if (ccb->ccb_h.status != CAM_REQ_CMP) {
 495                         printf("status != CAM_REQ_CMP\n");
 496                         return;
 497                 }
 498
 499                 xpt_print_path(ccb->ccb_h.path);
 500                 printf("Target mode disabled\n");
 501                 xpt_free_path(lstate->path);
 502
 503                 for (login = STAILQ_FIRST(&lstate->logins); login != NULL;
 504                     login = next) {
 505                         next = STAILQ_NEXT(login, link);
 506                         sbp_targ_dealloc_login(login);
 507                 }
 508
 509                 if (ccb->ccb_h.target_id == CAM_TARGET_WILDCARD)
 510                         sc->black_hole = NULL;
 511                 else
 512                         sc->lstate[ccb->ccb_h.target_lun] = NULL;
 513                 if (debug)
 514                         printf("%s: free lstate %p\n", __func__, lstate);
 515                 free(lstate, M_SBP_TARG);
 516                 lstate = NULL;
 517
 518                 /* bus reset */
 519                 sc->fd.fc->ibr(sc->fd.fc);
 520         }
 521 }
 522
 523 static void
 524 sbp_targ_send_lstate_events(struct sbp_targ_softc *sc,
 525     struct sbp_targ_lstate *lstate)
 526 {
 527 #if 0
 528         struct ccb_hdr *ccbh;
 529         struct ccb_immediate_notify *inot;
 530
 531         printf("%s: not implemented yet\n", __func__);
 532 #endif
 533 }
 534
 535
 536 static __inline void
 537 sbp_targ_remove_orb_info_locked(struct sbp_targ_login *login, struct orb_info *orbi)
 538 {
 539         STAILQ_REMOVE(&login->orbs, orbi, orb_info, link);
 540 }
 541
 542 static __inline void
 543 sbp_targ_remove_orb_info(struct sbp_targ_login *login, struct orb_info *orbi)
 544 {
 545         SBP_LOCK(orbi->sc);
 546         STAILQ_REMOVE(&login->orbs, orbi, orb_info, link);
 547         SBP_UNLOCK(orbi->sc);
 548 }
 549
 550 /*
 551  * tag_id/init_id encoding
 552  *
 553  * tag_id and init_id has only 32bit for each.
 554  * scsi_target can handle very limited number(up to 15) of init_id.
 555  * we have to encode 48bit orb and 64bit EUI64 into these
 556  * variables.
 557  *
 558  * tag_id represents lower 32bit of ORB address.
 559  * init_id represents login_id.
 560  *
 561  */
 562
 563 static struct orb_info *
 564 sbp_targ_get_orb_info(struct sbp_targ_lstate *lstate,
 565     u_int tag_id, u_int init_id)
 566 {
 567         struct sbp_targ_login *login;
 568         struct orb_info *orbi;
 569
 570         login = lstate->sc->logins[init_id];
 571         if (login == NULL) {
 572                 printf("%s: no such login\n", __func__);
 573                 return (NULL);
 574         }
 575         STAILQ_FOREACH(orbi, &login->orbs, link)
 576                 if (orbi->orb_lo == tag_id)
 577                         goto found;
 578         printf("%s: orb not found tag_id=0x%08x init_id=%d\n",
 579                          __func__, tag_id, init_id);
 580         return (NULL);
 581 found:
 582         return (orbi);
 583 }
 584
 585 static void
 586 sbp_targ_abort(struct sbp_targ_softc *sc, struct orb_info *orbi)
 587 {
 588         struct orb_info *norbi;
 589
 590         SBP_LOCK(sc);
 591         for (; orbi != NULL; orbi = norbi) {
 592                 printf("%s: status=%d ccb=%p\n", __func__, orbi->state, orbi->ccb);
 593                 norbi = STAILQ_NEXT(orbi, link);
 594                 if (orbi->state != ORBI_STATUS_ABORTED) {
 595                         if (orbi->ccb != NULL) {
 596                                 orbi->ccb->ccb_h.status = CAM_REQ_ABORTED;
 597                                 xpt_done(orbi->ccb);
 598                                 orbi->ccb = NULL;
 599                         }
 600                         if (orbi->state <= ORBI_STATUS_ATIO) {
 601                                 sbp_targ_remove_orb_info_locked(orbi->login, orbi);
 602                                 if (debug)
 603                                         printf("%s: free orbi %p\n", __func__, orbi);
 604                                 free(orbi, M_SBP_TARG);
 605                                 orbi = NULL;
 606                         } else
 607                                 orbi->state = ORBI_STATUS_ABORTED;
 608                 }
 609         }
 610         SBP_UNLOCK(sc);
 611 }
 612
 613 static void
 614 sbp_targ_free_orbi(struct fw_xfer *xfer)
 615 {
 616         struct orb_info *orbi;
 617
 618         if (xfer->resp != 0) {
 619                 /* XXX */
 620                 printf("%s: xfer->resp = %d\n", __func__, xfer->resp);
 621         }
 622         orbi = (struct orb_info *)xfer->sc;
 623         if ( orbi->page_table != NULL ) {
 624                 if (debug)
 625                         printf("%s:  free orbi->page_table %p\n", __func__, orbi->page_table);
 626                 free(orbi->page_table, M_SBP_TARG);
 627                 orbi->page_table = NULL;
 628         }
 629         if (debug)
 630                 printf("%s: free orbi %p\n", __func__, orbi);
 631         free(orbi, M_SBP_TARG);
 632         orbi = NULL;
 633         fw_xfer_free(xfer);
 634 }
 635
 636 static void
 637 sbp_targ_status_FIFO(struct orb_info *orbi,
 638     uint32_t fifo_hi, uint32_t fifo_lo, int dequeue)
 639 {
 640         struct fw_xfer *xfer;
 641
 642         if (dequeue)
 643                 sbp_targ_remove_orb_info(orbi->login, orbi);
 644
 645         xfer = fwmem_write_block(orbi->fwdev, (void *)orbi,
 646             /*spd*/FWSPD_S400, fifo_hi, fifo_lo,
 647             sizeof(uint32_t) * (orbi->status.len + 1), (char *)&orbi->status,
 648             sbp_targ_free_orbi);
 649
 650         if (xfer == NULL) {
 651                 /* XXX */
 652                 printf("%s: xfer == NULL\n", __func__);
 653         }
 654 }
 655
 656 /*
 657  * Generate the appropriate CAM status for the
 658  * target.
 659  */
 660 static void
 661 sbp_targ_send_status(struct orb_info *orbi, union ccb *ccb)
 662 {
 663         struct sbp_status *sbp_status;
 664 #if     0
 665         struct orb_info *norbi;
 666 #endif
 667
 668         sbp_status = &orbi->status;
 669
 670         orbi->state = ORBI_STATUS_STATUS;
 671
 672         sbp_status->resp = 0; /* XXX */
 673         sbp_status->status = 0; /* XXX */
 674         sbp_status->dead = 0; /* XXX */
 675
 676         ccb->ccb_h.status= CAM_REQ_CMP;
 677
 678         switch (ccb->csio.scsi_status) {
 679         case SCSI_STATUS_OK:
 680                 if (debug)
 681                         printf("%s: STATUS_OK\n", __func__);
 682                 sbp_status->len = 1;
 683                 break;
 684         case SCSI_STATUS_CHECK_COND:
 685                 if (debug)
 686                         printf("%s: STATUS SCSI_STATUS_CHECK_COND\n", __func__);
 687                 goto process_scsi_status;
 688         case SCSI_STATUS_BUSY:
 689                 if (debug)
 690                         printf("%s: STATUS SCSI_STATUS_BUSY\n", __func__);
 691                 goto process_scsi_status;
 692         case SCSI_STATUS_CMD_TERMINATED:
 693 process_scsi_status:
 694         {
 695                 struct sbp_cmd_status *sbp_cmd_status;
 696                 struct scsi_sense_data *sense;
 697                 int error_code, sense_key, asc, ascq;
 698                 uint8_t stream_bits;
 699                 uint8_t sks[3];
 700                 uint64_t info;
 701                 int64_t sinfo;
 702                 int sense_len;
 703
 704                 sbp_cmd_status = (struct sbp_cmd_status *)&sbp_status->data[0];
 705                 sbp_cmd_status->status = ccb->csio.scsi_status;
 706                 sense = &ccb->csio.sense_data;
 707
 708 #if 0           /* XXX What we should do? */
 709 #if 0
 710                 sbp_targ_abort(orbi->sc, STAILQ_NEXT(orbi, link));
 711 #else
 712                 norbi = STAILQ_NEXT(orbi, link);
 713                 while (norbi) {
 714                         printf("%s: status=%d\n", __func__, norbi->state);
 715                         if (norbi->ccb != NULL) {
 716                                 norbi->ccb->ccb_h.status = CAM_REQ_ABORTED;
 717                                 xpt_done(norbi->ccb);
 718                                 norbi->ccb = NULL;
 719                         }
 720                         sbp_targ_remove_orb_info_locked(orbi->login, norbi);
 721                         norbi = STAILQ_NEXT(norbi, link);
 722                         free(norbi, M_SBP_TARG);
 723                 }
 724 #endif
 725 #endif
 726
 727                 sense_len = ccb->csio.sense_len - ccb->csio.sense_resid;
 728                 scsi_extract_sense_len(sense, sense_len, &error_code,
 729                     &sense_key, &asc, &ascq, /*show_errors*/ 0);
 730
 731                 switch (error_code) {
 732                 case SSD_CURRENT_ERROR:
 733                 case SSD_DESC_CURRENT_ERROR:
 734                         sbp_cmd_status->sfmt = SBP_SFMT_CURR;
 735                         break;
 736                 default:
 737                         sbp_cmd_status->sfmt = SBP_SFMT_DEFER;
 738                         break;
 739                 }
 740
 741                 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &info,
 742                                         &sinfo) == 0) {
 743                         uint32_t info_trunc;
 744                         sbp_cmd_status->valid = 1;
 745                         info_trunc = info;
 746
 747                         sbp_cmd_status->info = htobe32(info_trunc);
 748                 } else {
 749                         sbp_cmd_status->valid = 0;
 750                 }
 751
 752                 sbp_cmd_status->s_key = sense_key;
 753
 754                 if (scsi_get_stream_info(sense, sense_len, NULL,
 755                                          &stream_bits) == 0) {
 756                         sbp_cmd_status->mark =
 757                             (stream_bits & SSD_FILEMARK) ? 1 : 0;
 758                         sbp_cmd_status->eom =
 759                             (stream_bits & SSD_EOM) ? 1 : 0;
 760                         sbp_cmd_status->ill_len =
 761                             (stream_bits & SSD_ILI) ? 1 : 0;
 762                 } else {
 763                         sbp_cmd_status->mark = 0;
 764                         sbp_cmd_status->eom = 0;
 765                         sbp_cmd_status->ill_len = 0;
 766                 }
 767
 768
 769                 /* add_sense_code(_qual), info, cmd_spec_info */
 770                 sbp_status->len = 4;
 771
 772                 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_COMMAND,
 773                                         &info, &sinfo) == 0) {
 774                         uint32_t cmdspec_trunc;
 775
 776                         cmdspec_trunc = info;
 777
 778                         sbp_cmd_status->cdb = htobe32(cmdspec_trunc);
 779                 }
 780
 781                 sbp_cmd_status->s_code = asc;
 782                 sbp_cmd_status->s_qlfr = ascq;
 783
 784                 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_FRU, &info,
 785                                         &sinfo) == 0) {
 786                         sbp_cmd_status->fru = (uint8_t)info;
 787                         sbp_status->len = 5;
 788                 } else {
 789                         sbp_cmd_status->fru = 0;
 790                 }
 791
 792                 if (scsi_get_sks(sense, sense_len, sks) == 0) {
 793                         bcopy(sks, &sbp_cmd_status->s_keydep[0], sizeof(sks));
 794                         sbp_status->len = 5;
 795                         ccb->ccb_h.status |= CAM_SENT_SENSE;
 796                 }
 797
 798                 break;
 799         }
 800         default:
 801                 printf("%s: unknown scsi status 0x%x\n", __func__,
 802                     sbp_status->status);
 803         }
 804
 805
 806         sbp_targ_status_FIFO(orbi,
 807             orbi->login->fifo_hi, orbi->login->fifo_lo, /*dequeue*/1);
 808 }
 809
 810 /*
 811  * Invoked as a callback handler from fwmem_read/write_block
 812  *
 813  * Process read/write of initiator address space
 814  * completion and pass status onto the backend target.
 815  * If this is a partial read/write for a CCB then
 816  * we decrement the orbi's refcount to indicate
 817  * the status of the read/write is complete
 818  */
 819 static void
 820 sbp_targ_cam_done(struct fw_xfer *xfer)
 821 {
 822         struct orb_info *orbi;
 823         union ccb *ccb;
 824
 825         orbi = (struct orb_info *)xfer->sc;
 826
 827         if (debug)
 828                 printf("%s: resp=%d refcount=%d\n", __func__,
 829                         xfer->resp, orbi->refcount);
 830
 831         if (xfer->resp != 0) {
 832                 printf("%s: xfer->resp = %d\n", __func__, xfer->resp);
 833                 orbi->status.resp = SBP_TRANS_FAIL;
 834                 orbi->status.status = OBJ_DATA | SBE_TIMEOUT/*XXX*/;
 835                 orbi->status.dead = 1;
 836                 sbp_targ_abort(orbi->sc, STAILQ_NEXT(orbi, link));
 837         }
 838
 839         orbi->refcount--;
 840
 841         ccb = orbi->ccb;
 842         if (orbi->refcount == 0) {
 843                 orbi->ccb = NULL;
 844                 if (orbi->state == ORBI_STATUS_ABORTED) {
 845                         if (debug)
 846                                 printf("%s: orbi aborted\n", __func__);
 847                         sbp_targ_remove_orb_info(orbi->login, orbi);
 848                         if (orbi->page_table != NULL) {
 849                                 if (debug)
 850                                         printf("%s: free orbi->page_table %p\n",
 851                                                 __func__, orbi->page_table);
 852                                 free(orbi->page_table, M_SBP_TARG);
 853                         }
 854                         if (debug)
 855                                 printf("%s: free orbi %p\n", __func__, orbi);
 856                         free(orbi, M_SBP_TARG);
 857                         orbi = NULL;
 858                 } else if (orbi->status.resp == ORBI_STATUS_NONE) {
 859                         if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 860                                 if (debug)
 861                                         printf("%s: CAM_SEND_STATUS set %0x\n", __func__, ccb->ccb_h.flags);
 862                                 sbp_targ_send_status(orbi, ccb);
 863                         } else {
 864                                 if (debug)
 865                                         printf("%s: CAM_SEND_STATUS not set %0x\n", __func__, ccb->ccb_h.flags);
 866                                 ccb->ccb_h.status = CAM_REQ_CMP;
 867                         }
 868                         xpt_done(ccb);
 869                 } else {
 870                         orbi->status.len = 1;
 871                         sbp_targ_status_FIFO(orbi,
 872                             orbi->login->fifo_hi, orbi->login->fifo_lo,
 873                             /*dequeue*/1);
 874                         ccb->ccb_h.status = CAM_REQ_ABORTED;
 875                         xpt_done(ccb);
 876                 }
 877         }
 878
 879         fw_xfer_free(xfer);
 880 }
 881
 882 static cam_status
 883 sbp_targ_abort_ccb(struct sbp_targ_softc *sc, union ccb *ccb)
 884 {
 885         union ccb *accb;
 886         struct sbp_targ_lstate *lstate;
 887         struct ccb_hdr_slist *list;
 888         struct ccb_hdr *curelm;
 889         int found;
 890         cam_status status;
 891
 892         status = sbp_targ_find_devs(sc, ccb, &lstate, 0);
 893         if (status != CAM_REQ_CMP)
 894                 return (status);
 895
 896         accb = ccb->cab.abort_ccb;
 897
 898         if (accb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
 899                 list = &lstate->accept_tios;
 900         else if (accb->ccb_h.func_code == XPT_IMMEDIATE_NOTIFY)
 901                 list = &lstate->immed_notifies;
 902         else
 903                 return (CAM_UA_ABORT);
 904
 905         curelm = SLIST_FIRST(list);
 906         found = 0;
 907         if (curelm == &accb->ccb_h) {
 908                 found = 1;
 909                 SLIST_REMOVE_HEAD(list, sim_links.sle);
 910         } else {
 911                 while (curelm != NULL) {
 912                         struct ccb_hdr *nextelm;
 913
 914                         nextelm = SLIST_NEXT(curelm, sim_links.sle);
 915                         if (nextelm == &accb->ccb_h) {
 916                                 found = 1;
 917                                 SLIST_NEXT(curelm, sim_links.sle) =
 918                                     SLIST_NEXT(nextelm, sim_links.sle);
 919                                 break;
 920                         }
 921                         curelm = nextelm;
 922                 }
 923         }
 924         if (found) {
 925                 accb->ccb_h.status = CAM_REQ_ABORTED;
 926                 xpt_done(accb);
 927                 return (CAM_REQ_CMP);
 928         }
 929         printf("%s: not found\n", __func__);
 930         return (CAM_PATH_INVALID);
 931 }
 932
 933 /*
 934  * directly execute a read or write to the initiator
 935  * address space and set hand(sbp_targ_cam_done) to
 936  * process the completion from the SIM to the target.
 937  * set orbi->refcount to inidicate that a read/write
 938  * is inflight to/from the initiator.
 939  */
 940 static void
 941 sbp_targ_xfer_buf(struct orb_info *orbi, u_int offset,
 942     uint16_t dst_hi, uint32_t dst_lo, u_int size,
 943     void (*hand)(struct fw_xfer *))
 944 {
 945         struct fw_xfer *xfer;
 946         u_int len, ccb_dir, off = 0;
 947         char *ptr;
 948
 949         if (debug > 1)
 950                 printf("%s: offset=%d size=%d\n", __func__, offset, size);
 951         ccb_dir = orbi->ccb->ccb_h.flags & CAM_DIR_MASK;
 952         ptr = (char *)orbi->ccb->csio.data_ptr + offset;
 953
 954         while (size > 0) {
 955                 /* XXX assume dst_lo + off doesn't overflow */
 956                 len = MIN(size, 2048 /* XXX */);
 957                 size -= len;
 958                 orbi->refcount ++;
 959                 if (ccb_dir == CAM_DIR_OUT) {
 960                         if (debug)
 961                                 printf("%s: CAM_DIR_OUT --> read block in?\n",__func__);
 962                         xfer = fwmem_read_block(orbi->fwdev,
 963                            (void *)orbi, /*spd*/FWSPD_S400,
 964                             dst_hi, dst_lo + off, len,
 965                             ptr + off, hand);
 966                 } else {
 967                         if (debug)
 968                                 printf("%s: CAM_DIR_IN --> write block out?\n",__func__);
 969                         xfer = fwmem_write_block(orbi->fwdev,
 970                            (void *)orbi, /*spd*/FWSPD_S400,
 971                             dst_hi, dst_lo + off, len,
 972                             ptr + off, hand);
 973                 }
 974                 if (xfer == NULL) {
 975                         printf("%s: xfer == NULL", __func__);
 976                         /* XXX what should we do?? */
 977                         orbi->refcount--;
 978                 }
 979                 off += len;
 980         }
 981 }
 982
 983 static void
 984 sbp_targ_pt_done(struct fw_xfer *xfer)
 985 {
 986         struct orb_info *orbi;
 987         struct unrestricted_page_table_fmt *pt;
 988         uint32_t i;
 989
 990         orbi = (struct orb_info *)xfer->sc;
 991
 992         if (orbi->state == ORBI_STATUS_ABORTED) {
 993                 if (debug)
 994                         printf("%s: orbi aborted\n", __func__);
 995                 sbp_targ_remove_orb_info(orbi->login, orbi);
 996                 if (debug) {
 997                         printf("%s: free orbi->page_table %p\n", __func__, orbi->page_table);
 998                         printf("%s: free orbi %p\n", __func__, orbi);
 999                 }
1000                 free(orbi->page_table, M_SBP_TARG);
1001                 free(orbi, M_SBP_TARG);
1002                 orbi = NULL;
1003                 fw_xfer_free(xfer);
1004                 return;
1005         }
1006         if (xfer->resp != 0) {
1007                 printf("%s: xfer->resp = %d\n", __func__, xfer->resp);
1008                 orbi->status.resp = SBP_TRANS_FAIL;
1009                 orbi->status.status = OBJ_PT | SBE_TIMEOUT/*XXX*/;
1010                 orbi->status.dead = 1;
1011                 orbi->status.len = 1;
1012                 sbp_targ_abort(orbi->sc, STAILQ_NEXT(orbi, link));
1013
1014                 if (debug)
1015                         printf("%s: free orbi->page_table %p\n", __func__, orbi->page_table);
1016
1017                 sbp_targ_status_FIFO(orbi,
1018                     orbi->login->fifo_hi, orbi->login->fifo_lo, /*dequeue*/1);
1019                 free(orbi->page_table, M_SBP_TARG);
1020                 orbi->page_table = NULL;
1021                 fw_xfer_free(xfer);
1022                 return;
1023         }
1024         orbi->refcount++;
1025 /*
1026  * Set endianness here so we don't have
1027  * to deal with is later
1028  */
1029         for (i = 0, pt = orbi->page_table; i < orbi->orb4.data_size; i++, pt++) {
1030                 pt->segment_len = ntohs(pt->segment_len);
1031                 if (debug)
1032                         printf("%s:segment_len = %u\n", __func__,pt->segment_len);
1033                 pt->segment_base_high = ntohs(pt->segment_base_high);
1034                 pt->segment_base_low = ntohl(pt->segment_base_low);
1035         }
1036
1037         sbp_targ_xfer_pt(orbi);
1038
1039         orbi->refcount--;
1040         if (orbi->refcount == 0)
1041                 printf("%s: refcount == 0\n", __func__);
1042
1043         fw_xfer_free(xfer);
1044         return;
1045 }
1046
1047 static void sbp_targ_xfer_pt(struct orb_info *orbi)
1048 {
1049         union ccb *ccb;
1050         uint32_t res, offset, len;
1051
1052         ccb = orbi->ccb;
1053         if (debug)
1054                 printf("%s: dxfer_len=%d\n", __func__, ccb->csio.dxfer_len);
1055         res = ccb->csio.dxfer_len;
1056         /*
1057          * If the page table required multiple CTIO's to
1058          * complete, then cur_pte is non NULL
1059          * and we need to start from the last position
1060          * If this is the first pass over a page table
1061          * then we just start at the beginning of the page
1062          * table.
1063          *
1064          * Parse the unrestricted page table and figure out where we need
1065          * to shove the data from this read request.
1066          */
1067         for (offset = 0, len = 0; (res != 0) && (orbi->cur_pte < orbi->last_pte); offset += len) {
1068                 len = MIN(orbi->cur_pte->segment_len, res);
1069                 res -= len;
1070                 if (debug)
1071                         printf("%s:page_table: %04x:%08x segment_len(%u) res(%u) len(%u)\n",
1072                                 __func__, orbi->cur_pte->segment_base_high,
1073                                 orbi->cur_pte->segment_base_low,
1074                                 orbi->cur_pte->segment_len,
1075                                 res, len);
1076                 sbp_targ_xfer_buf(orbi, offset,
1077                                 orbi->cur_pte->segment_base_high,
1078                                 orbi->cur_pte->segment_base_low,
1079                                 len, sbp_targ_cam_done);
1080                 /*
1081                  * If we have only written partially to
1082                  * this page table, then we need to save
1083                  * our position for the next CTIO.  If we
1084                  * have completed the page table, then we
1085                  * are safe to move on to the next entry.
1086                  */
1087                 if (len == orbi->cur_pte->segment_len) {
1088                         orbi->cur_pte++;
1089                 } else {
1090                         uint32_t saved_base_low;
1091
1092                         /* Handle transfers that cross a 4GB boundary. */
1093                         saved_base_low = orbi->cur_pte->segment_base_low;
1094                         orbi->cur_pte->segment_base_low += len;
1095                         if (orbi->cur_pte->segment_base_low < saved_base_low)
1096                                 orbi->cur_pte->segment_base_high++;
1097
1098                         orbi->cur_pte->segment_len -= len;
1099                 }
1100         }
1101         if (debug) {
1102                 printf("%s: base_low(%08x) page_table_off(%p) last_block(%u)\n",
1103                         __func__, orbi->cur_pte->segment_base_low,
1104                         orbi->cur_pte, orbi->last_block_read);
1105         }
1106         if (res != 0)
1107                 printf("Warning - short pt encountered.  "
1108                         "Could not transfer all data.\n");
1109         return;
1110 }
1111
1112 /*
1113  * Create page table in local memory
1114  * and transfer it from the initiator
1115  * in order to know where we are supposed
1116  * to put the data.
1117  */
1118
1119 static void
1120 sbp_targ_fetch_pt(struct orb_info *orbi)
1121 {
1122         struct fw_xfer *xfer;
1123
1124         /*
1125          * Pull in page table from initiator
1126          * and setup for data from our
1127          * backend device.
1128          */
1129         if (orbi->page_table == NULL) {
1130                 orbi->page_table = malloc(orbi->orb4.data_size*
1131                                           sizeof(struct unrestricted_page_table_fmt),
1132                                           M_SBP_TARG, M_NOWAIT|M_ZERO);
1133                 if (orbi->page_table == NULL)
1134                         goto error;
1135                 orbi->cur_pte = orbi->page_table;
1136                 orbi->last_pte = orbi->page_table + orbi->orb4.data_size;
1137                 orbi->last_block_read = orbi->orb4.data_size;
1138                 if (debug && orbi->page_table != NULL)
1139                         printf("%s: malloc'd orbi->page_table(%p), orb4.data_size(%u)\n",
1140                                 __func__, orbi->page_table, orbi->orb4.data_size);
1141
1142                 xfer = fwmem_read_block(orbi->fwdev, (void *)orbi, /*spd*/FWSPD_S400,
1143                                         orbi->data_hi, orbi->data_lo, orbi->orb4.data_size*
1144                                         sizeof(struct unrestricted_page_table_fmt),
1145                                         (void *)orbi->page_table, sbp_targ_pt_done);
1146
1147                 if (xfer != NULL)
1148                         return;
1149         } else {
1150                 /*
1151                  * This is a CTIO for a page table we have
1152                  * already malloc'd, so just directly invoke
1153                  * the xfer function on the orbi.
1154                  */
1155                 sbp_targ_xfer_pt(orbi);
1156                 return;
1157         }
1158 error:
1159         orbi->ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
1160         if (debug)
1161                 printf("%s: free orbi->page_table %p due to xfer == NULL\n", __func__, orbi->page_table);
1162         if (orbi->page_table != NULL) {
1163                 free(orbi->page_table, M_SBP_TARG);
1164                 orbi->page_table = NULL;
1165         }
1166         xpt_done(orbi->ccb);
1167         return;
1168 }
1169
1170 static void
1171 sbp_targ_action1(struct cam_sim *sim, union ccb *ccb)
1172 {
1173         struct sbp_targ_softc *sc;
1174         struct sbp_targ_lstate *lstate;
1175         cam_status status;
1176         u_int ccb_dir;
1177
1178         sc =  (struct sbp_targ_softc *)cam_sim_softc(sim);
1179
1180         status = sbp_targ_find_devs(sc, ccb, &lstate, TRUE);
1181
1182         switch (ccb->ccb_h.func_code) {
1183         case XPT_CONT_TARGET_IO:
1184         {
1185                 struct orb_info *orbi;
1186
1187                 if (debug)
1188                         printf("%s: XPT_CONT_TARGET_IO (0x%08x)\n",
1189                                          __func__, ccb->csio.tag_id);
1190
1191                 if (status != CAM_REQ_CMP) {
1192                         ccb->ccb_h.status = status;
1193                         xpt_done(ccb);
1194                         break;
1195                 }
1196                 /* XXX transfer from/to initiator */
1197                 orbi = sbp_targ_get_orb_info(lstate,
1198                     ccb->csio.tag_id, ccb->csio.init_id);
1199                 if (orbi == NULL) {
1200                         ccb->ccb_h.status = CAM_REQ_ABORTED; /* XXX */
1201                         xpt_done(ccb);
1202                         break;
1203                 }
1204                 if (orbi->state == ORBI_STATUS_ABORTED) {
1205                         if (debug)
1206                                 printf("%s: ctio aborted\n", __func__);
1207                         sbp_targ_remove_orb_info_locked(orbi->login, orbi);
1208                         if (debug)
1209                                 printf("%s: free orbi %p\n", __func__, orbi);
1210                         free(orbi, M_SBP_TARG);
1211                         ccb->ccb_h.status = CAM_REQ_ABORTED;
1212                         xpt_done(ccb);
1213                         break;
1214                 }
1215                 orbi->state = ORBI_STATUS_CTIO;
1216
1217                 orbi->ccb = ccb;
1218                 ccb_dir = ccb->ccb_h.flags & CAM_DIR_MASK;
1219
1220                 /* XXX */
1221                 if (ccb->csio.dxfer_len == 0)
1222                         ccb_dir = CAM_DIR_NONE;
1223
1224                 /* Sanity check */
1225                 if (ccb_dir == CAM_DIR_IN && orbi->orb4.dir == 0)
1226                         printf("%s: direction mismatch\n", __func__);
1227
1228                 /* check page table */
1229                 if (ccb_dir != CAM_DIR_NONE && orbi->orb4.page_table_present) {
1230                         if (debug)
1231                                 printf("%s: page_table_present\n",
1232                                     __func__);
1233                         if (orbi->orb4.page_size != 0) {
1234                                 printf("%s: unsupported pagesize %d != 0\n",
1235                                     __func__, orbi->orb4.page_size);
1236                                 ccb->ccb_h.status = CAM_REQ_INVALID;
1237                                 xpt_done(ccb);
1238                                 break;
1239                         }
1240                         sbp_targ_fetch_pt(orbi);
1241                         break;
1242                 }
1243
1244                 /* Sanity check */
1245                 if (ccb_dir != CAM_DIR_NONE) {
1246                         sbp_targ_xfer_buf(orbi, 0, orbi->data_hi,
1247                             orbi->data_lo,
1248                             MIN(orbi->orb4.data_size, ccb->csio.dxfer_len),
1249                             sbp_targ_cam_done);
1250                         if ( orbi->orb4.data_size > ccb->csio.dxfer_len ) {
1251                                 orbi->data_lo += ccb->csio.dxfer_len;
1252                                 orbi->orb4.data_size -= ccb->csio.dxfer_len;
1253                         }
1254                 }
1255
1256                 if (ccb_dir == CAM_DIR_NONE) {
1257                         if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
1258                                 /* XXX */
1259                                 SBP_UNLOCK(sc);
1260                                 sbp_targ_send_status(orbi, ccb);
1261                                 SBP_LOCK(sc);
1262                         }
1263                         ccb->ccb_h.status = CAM_REQ_CMP;
1264                         xpt_done(ccb);
1265                 }
1266                 break;
1267         }
1268         case XPT_ACCEPT_TARGET_IO:      /* Add Accept Target IO Resource */
1269                 if (status != CAM_REQ_CMP) {
1270                         ccb->ccb_h.status = status;
1271                         xpt_done(ccb);
1272                         break;
1273                 }
1274                 SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
1275                     sim_links.sle);
1276                 ccb->ccb_h.status = CAM_REQ_INPROG;
1277                 if ((lstate->flags & F_ATIO_STARVED) != 0) {
1278                         struct sbp_targ_login *login;
1279
1280                         if (debug)
1281                                 printf("%s: new atio arrived\n", __func__);
1282                         lstate->flags &= ~F_ATIO_STARVED;
1283                         STAILQ_FOREACH(login, &lstate->logins, link)
1284                                 if ((login->flags & F_ATIO_STARVED) != 0) {
1285                                         login->flags &= ~F_ATIO_STARVED;
1286                                         sbp_targ_fetch_orb(lstate->sc,
1287                                             login->fwdev,
1288                                             login->last_hi, login->last_lo,
1289                                             login, FETCH_CMD);
1290                                 }
1291                 }
1292                 break;
1293         case XPT_NOTIFY_ACKNOWLEDGE:    /* recycle notify ack */
1294         case XPT_IMMEDIATE_NOTIFY:      /* Add Immediate Notify Resource */
1295                 if (status != CAM_REQ_CMP) {
1296                         ccb->ccb_h.status = status;
1297                         xpt_done(ccb);
1298                         break;
1299                 }
1300                 SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
1301                     sim_links.sle);
1302                 ccb->ccb_h.status = CAM_REQ_INPROG;
1303                 sbp_targ_send_lstate_events(sc, lstate);
1304                 break;
1305         case XPT_EN_LUN:
1306                 sbp_targ_en_lun(sc, ccb);
1307                 xpt_done(ccb);
1308                 break;
1309         case XPT_PATH_INQ:
1310         {
1311                 struct ccb_pathinq *cpi = &ccb->cpi;
1312
1313                 cpi->version_num = 1; /* XXX??? */
1314                 cpi->hba_inquiry = PI_TAG_ABLE;
1315                 cpi->target_sprt = PIT_PROCESSOR
1316                                  | PIT_DISCONNECT
1317                                  | PIT_TERM_IO;
1318                 cpi->transport = XPORT_SPI; /* FIXME add XPORT_FW type to cam */
1319                 cpi->hba_misc = PIM_NOINITIATOR | PIM_NOBUSRESET |
1320                     PIM_NO_6_BYTE;
1321                 cpi->hba_eng_cnt = 0;
1322                 cpi->max_target = 7; /* XXX */
1323                 cpi->max_lun = MAX_LUN - 1;
1324                 cpi->initiator_id = 7; /* XXX */
1325                 cpi->bus_id = sim->bus_id;
1326                 cpi->base_transfer_speed = 400 * 1000 / 8;
1327                 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
1328                 strlcpy(cpi->hba_vid, "SBP_TARG", HBA_IDLEN);
1329                 strlcpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
1330                 cpi->unit_number = sim->unit_number;
1331
1332                 cpi->ccb_h.status = CAM_REQ_CMP;
1333                 xpt_done(ccb);
1334                 break;
1335         }
1336         case XPT_ABORT:
1337         {
1338                 union ccb *accb = ccb->cab.abort_ccb;
1339
1340                 switch (accb->ccb_h.func_code) {
1341                 case XPT_ACCEPT_TARGET_IO:
1342                 case XPT_IMMEDIATE_NOTIFY:
1343                         ccb->ccb_h.status = sbp_targ_abort_ccb(sc, ccb);
1344                         break;
1345                 case XPT_CONT_TARGET_IO:
1346                         /* XXX */
1347                         ccb->ccb_h.status = CAM_UA_ABORT;
1348                         break;
1349                 default:
1350                         printf("%s: aborting unknown function %d\n",
1351                                 __func__, accb->ccb_h.func_code);
1352                         ccb->ccb_h.status = CAM_REQ_INVALID;
1353                         break;
1354                 }
1355                 xpt_done(ccb);
1356                 break;
1357         }
1358 #ifdef CAM_NEW_TRAN_CODE
1359         case XPT_SET_TRAN_SETTINGS:
1360                 ccb->ccb_h.status = CAM_REQ_INVALID;
1361                 xpt_done(ccb);
1362                 break;
1363         case XPT_GET_TRAN_SETTINGS:
1364         {
1365                 struct ccb_trans_settings *cts = &ccb->cts;
1366                 struct ccb_trans_settings_scsi *scsi =
1367                         &cts->proto_specific.scsi;
1368                 struct ccb_trans_settings_spi *spi =
1369                         &cts->xport_specific.spi;
1370
1371                 cts->protocol = PROTO_SCSI;
1372                 cts->protocol_version = SCSI_REV_2;
1373                 cts->transport = XPORT_FW;     /* should have a FireWire */
1374                 cts->transport_version = 2;
1375                 spi->valid = CTS_SPI_VALID_DISC;
1376                 spi->flags = CTS_SPI_FLAGS_DISC_ENB;
1377                 scsi->valid = CTS_SCSI_VALID_TQ;
1378                 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
1379 #if 0
1380                 printf("%s:%d:%d XPT_GET_TRAN_SETTINGS:\n",
1381                         device_get_nameunit(sc->fd.dev),
1382                         ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
1383 #endif
1384                 cts->ccb_h.status = CAM_REQ_CMP;
1385                 xpt_done(ccb);
1386                 break;
1387         }
1388 #endif
1389
1390         default:
1391                 printf("%s: unknown function 0x%x\n",
1392                     __func__, ccb->ccb_h.func_code);
1393                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
1394                 xpt_done(ccb);
1395                 break;
1396         }
1397         return;
1398 }
1399
1400 static void
1401 sbp_targ_action(struct cam_sim *sim, union ccb *ccb)
1402 {
1403         int s;
1404
1405         s = splfw();
1406         sbp_targ_action1(sim, ccb);
1407         splx(s);
1408 }
1409
1410 static void
1411 sbp_targ_poll(struct cam_sim *sim)
1412 {
1413         /* XXX */
1414         return;
1415 }
1416
1417 static void
1418 sbp_targ_cmd_handler(struct fw_xfer *xfer)
1419 {
1420         struct fw_pkt *fp;
1421         uint32_t *orb;
1422         struct corb4 *orb4;
1423         struct orb_info *orbi;
1424         struct ccb_accept_tio *atio;
1425         u_char *bytes;
1426         int i;
1427
1428         orbi = (struct orb_info *)xfer->sc;
1429         if (xfer->resp != 0) {
1430                 printf("%s: xfer->resp = %d\n", __func__, xfer->resp);
1431                 orbi->status.resp = SBP_TRANS_FAIL;
1432                 orbi->status.status = OBJ_ORB | SBE_TIMEOUT/*XXX*/;
1433                 orbi->status.dead = 1;
1434                 orbi->status.len = 1;
1435                 sbp_targ_abort(orbi->sc, STAILQ_NEXT(orbi, link));
1436
1437                 sbp_targ_status_FIFO(orbi,
1438                     orbi->login->fifo_hi, orbi->login->fifo_lo, /*dequeue*/1);
1439                 fw_xfer_free(xfer);
1440                 return;
1441         }
1442         fp = &xfer->recv.hdr;
1443
1444         atio = orbi->atio;
1445
1446         if (orbi->state == ORBI_STATUS_ABORTED) {
1447                 printf("%s: aborted\n", __func__);
1448                 sbp_targ_remove_orb_info(orbi->login, orbi);
1449                 free(orbi, M_SBP_TARG);
1450                 atio->ccb_h.status = CAM_REQ_ABORTED;
1451                 xpt_done((union ccb*)atio);
1452                 goto done0;
1453         }
1454         orbi->state = ORBI_STATUS_ATIO;
1455
1456         orb = orbi->orb;
1457         /* swap payload except SCSI command */
1458         for (i = 0; i < 5; i++)
1459                 orb[i] = ntohl(orb[i]);
1460
1461         orb4 = (struct corb4 *)&orb[4];
1462         if (orb4->rq_fmt != 0) {
1463                 /* XXX */
1464                 printf("%s: rq_fmt(%d) != 0\n", __func__, orb4->rq_fmt);
1465         }
1466
1467         atio->ccb_h.target_id = 0; /* XXX */
1468         atio->ccb_h.target_lun = orbi->login->lstate->lun;
1469         atio->sense_len = 0;
1470         atio->tag_action = MSG_SIMPLE_TASK;
1471         atio->tag_id = orbi->orb_lo;
1472         atio->init_id = orbi->login->id;
1473
1474         atio->ccb_h.flags |= CAM_TAG_ACTION_VALID;
1475         bytes = (u_char *)&orb[5];
1476         if (debug)
1477                 printf("%s: %p %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
1478                     __func__, (void *)atio,
1479                     bytes[0], bytes[1], bytes[2], bytes[3], bytes[4],
1480                     bytes[5], bytes[6], bytes[7], bytes[8], bytes[9]);
1481         switch (bytes[0] >> 5) {
1482         case 0:
1483                 atio->cdb_len = 6;
1484                 break;
1485         case 1:
1486         case 2:
1487                 atio->cdb_len = 10;
1488                 break;
1489         case 4:
1490                 atio->cdb_len = 16;
1491                 break;
1492         case 5:
1493                 atio->cdb_len = 12;
1494                 break;
1495         case 3:
1496         default:
1497                 /* Only copy the opcode. */
1498                 atio->cdb_len = 1;
1499                 printf("Reserved or VU command code type encountered\n");
1500                 break;
1501         }
1502
1503         memcpy(atio->cdb_io.cdb_bytes, bytes, atio->cdb_len);
1504
1505         atio->ccb_h.status |= CAM_CDB_RECVD;
1506
1507         /* next ORB */
1508         if ((orb[0] & (1<<31)) == 0) {
1509                 if (debug)
1510                         printf("%s: fetch next orb\n", __func__);
1511                 orbi->status.src = SRC_NEXT_EXISTS;
1512                 sbp_targ_fetch_orb(orbi->sc, orbi->fwdev,
1513                     orb[0], orb[1], orbi->login, FETCH_CMD);
1514         } else {
1515                 orbi->status.src = SRC_NO_NEXT;
1516                 orbi->login->flags &= ~F_LINK_ACTIVE;
1517         }
1518
1519         orbi->data_hi = orb[2];
1520         orbi->data_lo = orb[3];
1521         orbi->orb4 = *orb4;
1522
1523         xpt_done((union ccb*)atio);
1524 done0:
1525         fw_xfer_free(xfer);
1526         return;
1527 }
1528
1529 static struct sbp_targ_login *
1530 sbp_targ_get_login(struct sbp_targ_softc *sc, struct fw_device *fwdev, int lun)
1531 {
1532         struct sbp_targ_lstate *lstate;
1533         struct sbp_targ_login *login;
1534         int i;
1535
1536         lstate = sc->lstate[lun];
1537
1538         STAILQ_FOREACH(login, &lstate->logins, link)
1539                 if (login->fwdev == fwdev)
1540                         return (login);
1541
1542         for (i = 0; i < MAX_LOGINS; i++)
1543                 if (sc->logins[i] == NULL)
1544                         goto found;
1545
1546         printf("%s: increase MAX_LOGIN\n", __func__);
1547         return (NULL);
1548
1549 found:
1550         login = (struct sbp_targ_login *)malloc(
1551             sizeof(struct sbp_targ_login), M_SBP_TARG, M_NOWAIT | M_ZERO);
1552
1553         if (login == NULL) {
1554                 printf("%s: malloc failed\n", __func__);
1555                 return (NULL);
1556         }
1557
1558         login->id = i;
1559         login->fwdev = fwdev;
1560         login->lstate = lstate;
1561         login->last_hi = 0xffff;
1562         login->last_lo = 0xffffffff;
1563         login->hold_sec = 1;
1564         STAILQ_INIT(&login->orbs);
1565         CALLOUT_INIT(&login->hold_callout);
1566         sc->logins[i] = login;
1567         return (login);
1568 }
1569
1570 static void
1571 sbp_targ_mgm_handler(struct fw_xfer *xfer)
1572 {
1573         struct sbp_targ_lstate *lstate;
1574         struct sbp_targ_login *login;
1575         struct fw_pkt *fp;
1576         uint32_t *orb;
1577         struct morb4 *orb4;
1578         struct orb_info *orbi;
1579         int i;
1580
1581         orbi = (struct orb_info *)xfer->sc;
1582         if (xfer->resp != 0) {
1583                 printf("%s: xfer->resp = %d\n", __func__, xfer->resp);
1584                 orbi->status.resp = SBP_TRANS_FAIL;
1585                 orbi->status.status = OBJ_ORB | SBE_TIMEOUT/*XXX*/;
1586                 orbi->status.dead = 1;
1587                 orbi->status.len = 1;
1588                 sbp_targ_abort(orbi->sc, STAILQ_NEXT(orbi, link));
1589
1590                 sbp_targ_status_FIFO(orbi,
1591                     orbi->login->fifo_hi, orbi->login->fifo_lo, /*dequeue*/0);
1592                 fw_xfer_free(xfer);
1593                 return;
1594         }
1595         fp = &xfer->recv.hdr;
1596
1597         orb = orbi->orb;
1598         /* swap payload */
1599         for (i = 0; i < 8; i++) {
1600                 orb[i] = ntohl(orb[i]);
1601         }
1602         orb4 = (struct morb4 *)&orb[4];
1603         if (debug)
1604                 printf("%s: %s\n", __func__, orb_fun_name[orb4->fun]);
1605
1606         orbi->status.src = SRC_NO_NEXT;
1607
1608         switch (orb4->fun << 16) {
1609         case ORB_FUN_LGI:
1610         {
1611                 int exclusive = 0, lun;
1612
1613                 if (orb[4] & ORB_EXV)
1614                         exclusive = 1;
1615
1616                 lun = orb4->id;
1617                 lstate = orbi->sc->lstate[lun];
1618
1619                 if (lun >= MAX_LUN || lstate == NULL ||
1620                     (exclusive &&
1621                     STAILQ_FIRST(&lstate->logins) != NULL &&
1622                     STAILQ_FIRST(&lstate->logins)->fwdev != orbi->fwdev)
1623                    ) {
1624                         /* error */
1625                         orbi->status.dead = 1;
1626                         orbi->status.status = STATUS_ACCESS_DENY;
1627                         orbi->status.len = 1;
1628                         break;
1629                 }
1630
1631                 /* allocate login */
1632                 login = sbp_targ_get_login(orbi->sc, orbi->fwdev, lun);
1633                 if (login == NULL) {
1634                         printf("%s: sbp_targ_get_login failed\n",
1635                             __func__);
1636                         orbi->status.dead = 1;
1637                         orbi->status.status = STATUS_RES_UNAVAIL;
1638                         orbi->status.len = 1;
1639                         break;
1640                 }
1641                 printf("%s: login id=%d\n", __func__, login->id);
1642
1643                 login->fifo_hi = orb[6];
1644                 login->fifo_lo = orb[7];
1645                 login->loginres.len = htons(sizeof(uint32_t) * 4);
1646                 login->loginres.id = htons(login->id);
1647                 login->loginres.cmd_hi = htons(SBP_TARG_BIND_HI);
1648                 login->loginres.cmd_lo = htonl(SBP_TARG_BIND_LO(login->id));
1649                 login->loginres.recon_hold = htons(login->hold_sec);
1650
1651                 STAILQ_INSERT_TAIL(&lstate->logins, login, link);
1652                 fwmem_write_block(orbi->fwdev, NULL, /*spd*/FWSPD_S400, orb[2], orb[3],
1653                     sizeof(struct sbp_login_res), (void *)&login->loginres,
1654                     fw_asy_callback_free);
1655                 /* XXX return status after loginres is successfully written */
1656                 break;
1657         }
1658         case ORB_FUN_RCN:
1659                 login = orbi->sc->logins[orb4->id];
1660                 if (login != NULL && login->fwdev == orbi->fwdev) {
1661                         login->flags &= ~F_HOLD;
1662                         callout_stop(&login->hold_callout);
1663                         printf("%s: reconnected id=%d\n",
1664                             __func__, login->id);
1665                 } else {
1666                         orbi->status.dead = 1;
1667                         orbi->status.status = STATUS_ACCESS_DENY;
1668                         printf("%s: reconnection faild id=%d\n",
1669                             __func__, orb4->id);
1670                 }
1671                 break;
1672         case ORB_FUN_LGO:
1673                 login = orbi->sc->logins[orb4->id];
1674                 if (login->fwdev != orbi->fwdev) {
1675                         printf("%s: wrong initiator\n", __func__);
1676                         break;
1677                 }
1678                 sbp_targ_dealloc_login(login);
1679                 break;
1680         default:
1681                 printf("%s: %s not implemented yet\n",
1682                     __func__, orb_fun_name[orb4->fun]);
1683                 break;
1684         }
1685         orbi->status.len = 1;
1686         sbp_targ_status_FIFO(orbi, orb[6], orb[7], /*dequeue*/0);
1687         fw_xfer_free(xfer);
1688         return;
1689 }
1690
1691 static void
1692 sbp_targ_pointer_handler(struct fw_xfer *xfer)
1693 {
1694         struct orb_info *orbi;
1695         uint32_t orb0, orb1;
1696
1697         orbi = (struct orb_info *)xfer->sc;
1698         if (xfer->resp != 0) {
1699                 printf("%s: xfer->resp = %d\n", __func__, xfer->resp);
1700                 goto done;
1701         }
1702
1703         orb0 = ntohl(orbi->orb[0]);
1704         orb1 = ntohl(orbi->orb[1]);
1705         if ((orb0 & (1U << 31)) != 0) {
1706                 printf("%s: invalid pointer\n", __func__);
1707                 goto done;
1708         }
1709         sbp_targ_fetch_orb(orbi->login->lstate->sc, orbi->fwdev,
1710             (uint16_t)orb0, orb1, orbi->login, FETCH_CMD);
1711 done:
1712         free(orbi, M_SBP_TARG);
1713         fw_xfer_free(xfer);
1714         return;
1715 }
1716
1717 static void
1718 sbp_targ_fetch_orb(struct sbp_targ_softc *sc, struct fw_device *fwdev,
1719     uint16_t orb_hi, uint32_t orb_lo, struct sbp_targ_login *login,
1720     int mode)
1721 {
1722         struct orb_info *orbi;
1723
1724         if (debug)
1725                 printf("%s: fetch orb %04x:%08x\n", __func__, orb_hi, orb_lo);
1726         orbi = malloc(sizeof(struct orb_info), M_SBP_TARG, M_NOWAIT | M_ZERO);
1727         if (orbi == NULL) {
1728                 printf("%s: malloc failed\n", __func__);
1729                 return;
1730         }
1731         orbi->sc = sc;
1732         orbi->fwdev = fwdev;
1733         orbi->login = login;
1734         orbi->orb_hi = orb_hi;
1735         orbi->orb_lo = orb_lo;
1736         orbi->status.orb_hi = htons(orb_hi);
1737         orbi->status.orb_lo = htonl(orb_lo);
1738         orbi->page_table = NULL;
1739
1740         switch (mode) {
1741         case FETCH_MGM:
1742                 fwmem_read_block(fwdev, (void *)orbi, /*spd*/FWSPD_S400, orb_hi, orb_lo,
1743                     sizeof(uint32_t) * 8, &orbi->orb[0],
1744                     sbp_targ_mgm_handler);
1745                 break;
1746         case FETCH_CMD:
1747                 orbi->state = ORBI_STATUS_FETCH;
1748                 login->last_hi = orb_hi;
1749                 login->last_lo = orb_lo;
1750                 login->flags |= F_LINK_ACTIVE;
1751                 /* dequeue */
1752                 SBP_LOCK(sc);
1753                 orbi->atio = (struct ccb_accept_tio *)
1754                     SLIST_FIRST(&login->lstate->accept_tios);
1755                 if (orbi->atio == NULL) {
1756                         SBP_UNLOCK(sc);
1757                         printf("%s: no free atio\n", __func__);
1758                         login->lstate->flags |= F_ATIO_STARVED;
1759                         login->flags |= F_ATIO_STARVED;
1760 #if 0
1761                         /* XXX ?? */
1762                         login->fwdev = fwdev;
1763 #endif
1764                         break;
1765                 }
1766                 SLIST_REMOVE_HEAD(&login->lstate->accept_tios, sim_links.sle);
1767                 STAILQ_INSERT_TAIL(&login->orbs, orbi, link);
1768                 SBP_UNLOCK(sc);
1769                 fwmem_read_block(fwdev, (void *)orbi, /*spd*/FWSPD_S400, orb_hi, orb_lo,
1770                     sizeof(uint32_t) * 8, &orbi->orb[0],
1771                     sbp_targ_cmd_handler);
1772                 break;
1773         case FETCH_POINTER:
1774                 orbi->state = ORBI_STATUS_POINTER;
1775                 login->flags |= F_LINK_ACTIVE;
1776                 fwmem_read_block(fwdev, (void *)orbi, /*spd*/FWSPD_S400, orb_hi, orb_lo,
1777                     sizeof(uint32_t) * 2, &orbi->orb[0],
1778                     sbp_targ_pointer_handler);
1779                 break;
1780         default:
1781                 printf("%s: invalid mode %d\n", __func__, mode);
1782         }
1783 }
1784
1785 static void
1786 sbp_targ_resp_callback(struct fw_xfer *xfer)
1787 {
1788         struct sbp_targ_softc *sc;
1789         int s;
1790
1791         if (debug)
1792                 printf("%s: xfer=%p\n", __func__, xfer);
1793         sc = (struct sbp_targ_softc *)xfer->sc;
1794         fw_xfer_unload(xfer);
1795         xfer->recv.pay_len = SBP_TARG_RECV_LEN;
1796         xfer->hand = sbp_targ_recv;
1797         s = splfw();
1798         STAILQ_INSERT_TAIL(&sc->fwb.xferlist, xfer, link);
1799         splx(s);
1800 }
1801
1802 static int
1803 sbp_targ_cmd(struct fw_xfer *xfer, struct fw_device *fwdev, int login_id,
1804     int reg)
1805 {
1806         struct sbp_targ_login *login;
1807         struct sbp_targ_softc *sc;
1808         int rtcode = 0;
1809
1810         if (login_id < 0 || login_id >= MAX_LOGINS)
1811                 return (RESP_ADDRESS_ERROR);
1812
1813         sc = (struct sbp_targ_softc *)xfer->sc;
1814         login = sc->logins[login_id];
1815         if (login == NULL)
1816                 return (RESP_ADDRESS_ERROR);
1817
1818         if (login->fwdev != fwdev) {
1819                 /* XXX */
1820                 return (RESP_ADDRESS_ERROR);
1821         }
1822
1823         switch (reg) {
1824         case 0x08:      /* ORB_POINTER */
1825                 if (debug)
1826                         printf("%s: ORB_POINTER(%d)\n", __func__, login_id);
1827                 if ((login->flags & F_LINK_ACTIVE) != 0) {
1828                         if (debug)
1829                                 printf("link active (ORB_POINTER)\n");
1830                         break;
1831                 }
1832                 sbp_targ_fetch_orb(sc, fwdev,
1833                     ntohl(xfer->recv.payload[0]),
1834                     ntohl(xfer->recv.payload[1]),
1835                     login, FETCH_CMD);
1836                 break;
1837         case 0x04:      /* AGENT_RESET */
1838                 if (debug)
1839                         printf("%s: AGENT RESET(%d)\n", __func__, login_id);
1840                 login->last_hi = 0xffff;
1841                 login->last_lo = 0xffffffff;
1842                 sbp_targ_abort(sc, STAILQ_FIRST(&login->orbs));
1843                 break;
1844         case 0x10:      /* DOORBELL */
1845                 if (debug)
1846                         printf("%s: DOORBELL(%d)\n", __func__, login_id);
1847                 if (login->last_hi == 0xffff &&
1848                     login->last_lo == 0xffffffff) {
1849                         printf("%s: no previous pointer(DOORBELL)\n",
1850                             __func__);
1851                         break;
1852                 }
1853                 if ((login->flags & F_LINK_ACTIVE) != 0) {
1854                         if (debug)
1855                                 printf("link active (DOORBELL)\n");
1856                         break;
1857                 }
1858                 sbp_targ_fetch_orb(sc, fwdev,
1859                     login->last_hi, login->last_lo,
1860                     login, FETCH_POINTER);
1861                 break;
1862         case 0x00:      /* AGENT_STATE */
1863                 printf("%s: AGENT_STATE (%d:ignore)\n", __func__, login_id);
1864                 break;
1865         case 0x14:      /* UNSOLICITED_STATE_ENABLE */
1866                 printf("%s: UNSOLICITED_STATE_ENABLE (%d:ignore)\n",
1867                                                          __func__, login_id);
1868                 break;
1869         default:
1870                 printf("%s: invalid register %d(%d)\n",
1871                                                  __func__, reg, login_id);
1872                 rtcode = RESP_ADDRESS_ERROR;
1873         }
1874
1875         return (rtcode);
1876 }
1877
1878 static int
1879 sbp_targ_mgm(struct fw_xfer *xfer, struct fw_device *fwdev)
1880 {
1881         struct sbp_targ_softc *sc;
1882         struct fw_pkt *fp;
1883
1884         sc = (struct sbp_targ_softc *)xfer->sc;
1885
1886         fp = &xfer->recv.hdr;
1887         if (fp->mode.wreqb.tcode != FWTCODE_WREQB) {
1888                 printf("%s: tcode = %d\n", __func__, fp->mode.wreqb.tcode);
1889                 return (RESP_TYPE_ERROR);
1890         }
1891
1892         sbp_targ_fetch_orb(sc, fwdev,
1893             ntohl(xfer->recv.payload[0]),
1894             ntohl(xfer->recv.payload[1]),
1895             NULL, FETCH_MGM);
1896
1897         return (0);
1898 }
1899
1900 static void
1901 sbp_targ_recv(struct fw_xfer *xfer)
1902 {
1903         struct fw_pkt *fp, *sfp;
1904         struct fw_device *fwdev;
1905         uint32_t lo;
1906         int s, rtcode;
1907         struct sbp_targ_softc *sc;
1908
1909         s = splfw();
1910         sc = (struct sbp_targ_softc *)xfer->sc;
1911         fp = &xfer->recv.hdr;
1912         fwdev = fw_noderesolve_nodeid(sc->fd.fc, fp->mode.wreqb.src & 0x3f);
1913         if (fwdev == NULL) {
1914                 printf("%s: cannot resolve nodeid=%d\n",
1915                     __func__, fp->mode.wreqb.src & 0x3f);
1916                 rtcode = RESP_TYPE_ERROR; /* XXX */
1917                 goto done;
1918         }
1919         lo = fp->mode.wreqb.dest_lo;
1920
1921         if (lo == SBP_TARG_BIND_LO(-1))
1922                 rtcode = sbp_targ_mgm(xfer, fwdev);
1923         else if (lo >= SBP_TARG_BIND_LO(0))
1924                 rtcode = sbp_targ_cmd(xfer, fwdev, SBP_TARG_LOGIN_ID(lo),
1925                     lo % 0x20);
1926         else
1927                 rtcode = RESP_ADDRESS_ERROR;
1928
1929 done:
1930         if (rtcode != 0)
1931                 printf("%s: rtcode = %d\n", __func__, rtcode);
1932         sfp = &xfer->send.hdr;
1933         xfer->send.spd = FWSPD_S400;
1934         xfer->hand = sbp_targ_resp_callback;
1935         sfp->mode.wres.dst = fp->mode.wreqb.src;
1936         sfp->mode.wres.tlrt = fp->mode.wreqb.tlrt;
1937         sfp->mode.wres.tcode = FWTCODE_WRES;
1938         sfp->mode.wres.rtcode = rtcode;
1939         sfp->mode.wres.pri = 0;
1940
1941         fw_asyreq(xfer->fc, -1, xfer);
1942         splx(s);
1943 }
1944
1945 static int
1946 sbp_targ_attach(device_t dev)
1947 {
1948         struct sbp_targ_softc *sc;
1949         struct cam_devq *devq;
1950         struct firewire_comm *fc;
1951
1952         sc = (struct sbp_targ_softc *) device_get_softc(dev);
1953         bzero((void *)sc, sizeof(struct sbp_targ_softc));
1954
1955         mtx_init(&sc->mtx, "sbp_targ", NULL, MTX_DEF);
1956         sc->fd.fc = fc = device_get_ivars(dev);
1957         sc->fd.dev = dev;
1958         sc->fd.post_explore = (void *) sbp_targ_post_explore;
1959         sc->fd.post_busreset = (void *) sbp_targ_post_busreset;
1960
1961         devq = cam_simq_alloc(/*maxopenings*/MAX_LUN*MAX_INITIATORS);
1962         if (devq == NULL)
1963                 return (ENXIO);
1964
1965         sc->sim = cam_sim_alloc(sbp_targ_action, sbp_targ_poll,
1966             "sbp_targ", sc, device_get_unit(dev), &sc->mtx,
1967             /*untagged*/ 1, /*tagged*/ 1, devq);
1968         if (sc->sim == NULL) {
1969                 cam_simq_free(devq);
1970                 return (ENXIO);
1971         }
1972
1973         SBP_LOCK(sc);
1974         if (xpt_bus_register(sc->sim, dev, /*bus*/0) != CAM_SUCCESS)
1975                 goto fail;
1976
1977         if (xpt_create_path(&sc->path, /*periph*/ NULL, cam_sim_path(sc->sim),
1978             CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
1979                 xpt_bus_deregister(cam_sim_path(sc->sim));
1980                 goto fail;
1981         }
1982         SBP_UNLOCK(sc);
1983
1984         sc->fwb.start = SBP_TARG_BIND_START;
1985         sc->fwb.end = SBP_TARG_BIND_END;
1986
1987         /* pre-allocate xfer */
1988         STAILQ_INIT(&sc->fwb.xferlist);
1989         fw_xferlist_add(&sc->fwb.xferlist, M_SBP_TARG,
1990             /*send*/ 0, /*recv*/ SBP_TARG_RECV_LEN, MAX_LUN /* XXX */,
1991             fc, (void *)sc, sbp_targ_recv);
1992         fw_bindadd(fc, &sc->fwb);
1993         return 0;
1994
1995 fail:
1996         SBP_UNLOCK(sc);
1997         cam_sim_free(sc->sim, /*free_devq*/TRUE);
1998         return (ENXIO);
1999 }
2000
2001 static int
2002 sbp_targ_detach(device_t dev)
2003 {
2004         struct sbp_targ_softc *sc;
2005         struct sbp_targ_lstate *lstate;
2006         int i;
2007
2008         sc = (struct sbp_targ_softc *)device_get_softc(dev);
2009         sc->fd.post_busreset = NULL;
2010
2011         SBP_LOCK(sc);
2012         xpt_free_path(sc->path);
2013         xpt_bus_deregister(cam_sim_path(sc->sim));
2014         cam_sim_free(sc->sim, /*free_devq*/TRUE);
2015         SBP_UNLOCK(sc);
2016
2017         for (i = 0; i < MAX_LUN; i++) {
2018                 lstate = sc->lstate[i];
2019                 if (lstate != NULL) {
2020                         xpt_free_path(lstate->path);
2021                         free(lstate, M_SBP_TARG);
2022                 }
2023         }
2024         if (sc->black_hole != NULL) {
2025                 xpt_free_path(sc->black_hole->path);
2026                 free(sc->black_hole, M_SBP_TARG);
2027         }
2028
2029         fw_bindremove(sc->fd.fc, &sc->fwb);
2030         fw_xferlist_remove(&sc->fwb.xferlist);
2031
2032         mtx_destroy(&sc->mtx);
2033
2034         return 0;
2035 }
2036
2037 static devclass_t sbp_targ_devclass;
2038
2039 static device_method_t sbp_targ_methods[] = {
2040         /* device interface */
2041         DEVMETHOD(device_identify,      sbp_targ_identify),
2042         DEVMETHOD(device_probe,         sbp_targ_probe),
2043         DEVMETHOD(device_attach,        sbp_targ_attach),
2044         DEVMETHOD(device_detach,        sbp_targ_detach),
2045         { 0, 0 }
2046 };
2047
2048 static driver_t sbp_targ_driver = {
2049         "sbp_targ",
2050         sbp_targ_methods,
2051         sizeof(struct sbp_targ_softc),
2052 };
2053
2054 DRIVER_MODULE(sbp_targ, firewire, sbp_targ_driver, sbp_targ_devclass, 0, 0);
2055 MODULE_VERSION(sbp_targ, 1);
2056 MODULE_DEPEND(sbp_targ, firewire, 1, 1, 1);
2057 MODULE_DEPEND(sbp_targ, cam, 1, 1, 1);